Carrier Furnace Infinity 96 Manual

The Carrier Furnace Infinity 96 is a high-efficiency gas furnace with variable-speed technology, AFUE rating of up to 96%, two-stage gas valve operation, ComfortHeat technology, durable aluminized steel heat exchanger, diagnostic LED system, quiet operation, and compatibility with Carrier Infinity System Control. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Variable-speed blower motor, two-stage gas valve, aluminized steel heat exchanger, diagnostic LED, pressure switches, flame sensor, igniter.

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

1. Location: Install in dry, clean area with adequate combustion air and service clearance.
2. Venting: Use approved PVC pipe for concentric or two-pipe direct vent system.
3. Gas Supply: Connect to proper gas line with sediment trap and shutoff valve.
4. Electrical: Connect to 120V AC power with proper grounding.
5. Ductwork: Ensure properly sized and sealed duct system.

WARNING! Gas furnaces produce carbon monoxide. Proper venting is critical. Installation must comply with all local codes and manufacturer specifications.

First-Time Setup

Power on furnace; follow startup procedure.

1. Gas line check: Verify no leaks with bubble solution test.
2. Venting verification: Confirm proper draft and clearances.
3. Electrical connections: Check all wiring connections are secure.
4. Startup sequence: Turn on gas supply, then electrical power.
5. Initial operation: Monitor first heating cycle for proper operation.
6. Thermostat setup: Configure Infinity System Control if installed.

CAUTION! Only qualified HVAC technicians should perform startup procedures. Improper setup can create hazardous conditions.

Technical Specifications

• Model Series: 59MN7, 59TP6
• AFUE: Up to 96%
• Input BTU/H: 40,000 to 120,000 (varies by model)
• Stages: Two-stage gas valve
• Blower Type: Variable-speed ECM motor
• Voltage: 120V AC, 60Hz
• Gas Type: Natural gas or LP (with conversion kit)
• Venting: PVC pipe (2" or 3")
• Sound Level: As low as 68 dBA
• Warranty: Limited lifetime heat exchanger, 10-year parts

Controls and Settings

Access settings via Infinity System Control or furnace control board.

Infinity Control: Temperature setting, fan control, system mode, diagnostic information, scheduling.

Furnace Control Board: Diagnostic LED (flashing codes), DIP switch settings for airflow, gas heat stages, blower speed adjustments. Settings: Temperature rise verification, airflow CFM settings, gas pressure adjustment, blower off delays.

Venting and Airflow

Direct vent system using PVC pipe. Combustion air intake and flue gas exhaust.

1. Vent pipe sizing: Follow manufacturer specifications for length and diameter.
2. Clearances: Maintain required distances from windows, doors, and air intakes.
3. Airflow: Ensure proper return and supply duct sizing.
4. Filters: Install correct MERV-rated air filters.

Tip: Regular inspection of vent pipes and air filters ensures optimal performance and safety.

Operating Modes

Heating operation with two-stage capability.

1. First stage: Lower heat output for mild weather and energy savings.
2. Second stage: Higher heat output for cold weather conditions.
3. Fan operation: Continuous or automatic modes available.
4. Smart control: Adaptive capacity operation with Infinity System.
5. Diagnostic mode: LED flash codes indicate system status.

WARNING! Never operate furnace with access panels removed. Keep combustible materials away from furnace.

Maintenance Procedures

Annual professional maintenance recommended. Monthly homeowner tasks.

1. Air filter: Replace every 1-3 months depending on usage.
2. Visual inspection: Check for debris, corrosion, or damage.
3. Vent inspection: Ensure vent pipes are clear and secure.
4. Burner inspection: Clean burners and check flame pattern.
5. Blower maintenance: Clean blower wheel and housing.
6. Drain system: Clear condensate drain lines and trap.

CAUTION! Turn off electrical power and gas supply before performing any maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

Regulatory Information

UL listed and ANSI certified. Complies with U.S. Department of Energy efficiency standards. Manufactured to meet or exceed ASHRAE standards. Copyright © Carrier Corporation. All rights reserved. For technical support and warranty information, contact Carrier at 1-800-CARRIER or visit www.carrier.com.

Troubleshooting

Reset Procedure: Turn thermostat to off, turn off power at furnace for 30 seconds, restore power, turn thermostat to heat.

Service: 1-800-CARRIER; www.carrier.com